What is "logwood"

Usage examples of "logwood".

With hydrochloric acid, logwood ink marks turn reddish or reddish-gray, alizarin marks greenish, and aniline ink marks reddish or brownish-gray.

It is made artificially from high wines by the addition of oil of Cognac, to give it flavor, burnt sugar to give it color, and logwood or catechu, to impart astringency and roughness of taste.

Logwood is a mild astringent, well adapted to remedy the relaxed condition of the bowels after cholera infantum.

Horsley gives the following receipt: Triturate in a mortar thirty-six grains of gallic acid with three and one-half ounces of strong decoction of logwood, put it into an eight ounce bottle, together with one ounce of strong ammonia.

They may be combined with logwood, as they will dye with equal facility on mordanted and unmordanted wool.

This is a representative of the true adjective dyes, which comprise most of the so-called Alizarine dye-stuffs, and logwood, fustic, and most of the natural dye-stuffs.

The red produced by brazilwood, for example, is fugitive, as is the lavender that comes from logwood.

This method is more particularly applicable to such dye-stuffs as camwood, cutch, logwood, madder, fustic, etc.

Working as he does with dye-stuffs of unknown colouring power, which may vary from time to time with every fresh batch of material, it is evident that, although the same quantities may be used at all times, at one time a deeper shade may be obtained than at another, and as it is impossible to see what is going to be the result, and if by mischance the shade does not come deep enough it cannot well be rectified by adding a quantity of dye-wood to the bath, because the mordant in the latter will prevent the colouring matter from being properly extracted, and only a part of that which is extracted is fixed on the wool, the rest being thrown away in the dye-bath, and partly on the particles of wood themselves, when logwood, camwood, etc.

By using logwood alone blue blacks can be dyed, by increasing the proportion of fustic a greener tone can be obtained, while by the use of a larger proportion of Chromotrop a redder tone of black is the result.

Spaniards for most of these seizures was that the vessels contained logwood, a dyewood found upon the coasts of Campeache, Honduras and Yucatan, the cutting and removal of which was forbidden to any but Spanish subjects.

Ink -- Writing Inks -- Raw Materials of Tannin Inks -- The Chemical Constitution of the Tannin Inks -- Recipes for Tannin Inks -- Logwood Tannin Inks -- Ferric Inks -- Alizarine Inks--Extract Inks -- Logwood Inks -- Copying Inks -- Hektographs -- Hektograph Inks -- Safety Inks -- Ink Extracts and Powders -- Preserving Inks -- Changes in Ink and the Restoration of Faded Writing -- Coloured Inks -- Red Inks -- Blue Inks -- Violet Inks -- Yellow Inks -- Green Inks -- Metallic Inks -- Indian Ink -- Lithographic Inks and Pencils -- Ink Pencils -- Marking Inks -- Ink Specialities -- Sympathetic Inks -- Stamping Inks -- Laundry or Washing Blue -- Index.

All such inks were exhibited which, though durable before the addition of logwood, faded rapidly after logwood was added to them.

At the commencement of the nineteenth century we find them making tanno-gallate of iron inks to which were added extractive matter from logwood and other materials to form thick fluids for shipment to Brazil, India and the countries where brushes or reeds were used as writing instruments.

For dyeing with logwood and copperas or bluestone the process is not a good one, as it does not give as full shades as by the ordinary process.